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Branch on Auxiliary Register Not Zero
BANZ
7-41
Assembly Language Instructions
Syntax BANZ
pma
[,
ind
[, AR
n
]] Indirect addressing
Operands pma: 16-bit program-memory address
n: Value from 0 to 7 designating the next auxiliary register
ind: Select one of the following seven options:
* *+ *– *0+ *0– *BR0+ *BR0–
BANZ
pma
[,
ind
[
,
AR
n
]]
1514131211109876543210
0
11110111 ARU N NAR
pma
Note: ARU, N, and NAR are defined in Section 6.3,
Indirect Addressing Mode
(page 6-9).
Execution If (current AR) ≠ 0
Then pma → PC
Else (PC) + 2 → PC
Modify (current AR) and (ARP) as specified
Status Bits None
Description Control is passed to the designated program-memory address (pma) if the
contents of the current auxiliary register are not zero. Otherwise, control
passes to the next instruction.The default modification to the current AR is a
decrement by one. N loop iterations can be executed by initializing an auxiliary
register (as a loop counter) to N–1 prior to loop entry. The pma can be either
a symbolic or a numeric address.
Words 2
Cycles for a Single BANZ Instruction
Condition ROM DARAM SARAM External
True 4 4 4 4+4p
False 2 2 2 2+2p
Note: The ’C2xx performs speculative fetching by reading two additional instruction words. If
the PC discontinuity is taken, these two instruction words are discarded.
Opcode
Cycles